Gather your mise en place; get together all of the equipment needed for the recipe and gather your ingredients.

In a mixing bowl, combine flour, sugar, baking powder and salt and mix well. 

Add the two eggs, lemon zest, juice and vanilla and mix well, then slowly stream the melted butter in while mixing. 

Cover the mix and allow it to sit at room temperature for 1 hour. 

Preheat the oven to 400°F. 

Set a nonstick madeleine pan on top of a baking tray. Using a pastry brush, grease the madeleine molds with melted butter. 

Scoop just over 1 tablespoon into each greased madeleine mold. 

Bake madeleines for 10 – 12 minutes until edges are golden brown and domed in the center. 

Remove the madeleines from the oven and pop out of the molds while still hot and place onto a cooling rack.